IS 15764 : 2008 Indian Standard TEXTILES - DETERMINATION OF BURNING BEHAVIOUR OF TEXTILE FLOOR COVERINGS ICS 13.220.40;59.080.60 © BIS 2008 BUREAU OF INDIAN STANDARDS MANAK BHAVAN. 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 May 2008 Price Group 4 Chemical Methods of Test Sectional Committee. TXD 05 FOREWORD This Indian Standard was ado pled by the Bureau of Indian Standards, after the draft finaliz ed by the Chem ical Methods of Test Section al Committee had been approved by the Textile Divi sion Council. This standard is equivalent to DIN 54332 'Determination of the burning beh aviour of textile floor coverings'. The composition of the Committee respon sible for the formulation of this standard is given in Annex A. For the purpose of deciding whether a particular requirement of this standard is compl ied with, the finai value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accord ance with IS 2 : 1960 'Rules .for rounding off numerical values (revised) '. The number of significa nt place s retained in the rounded off value should be the same as that of the specified value in this standard. IS 15764 : 2008 Indian Standard TEX.TILES - DETERMINATION OF BURNING BEHAVIOUR OF TEXTILE FLOOR COVERINGS 1 SCOPE This standard prescribes a method of determining the burning and smouldering times and the damaged area of textile floor coverings under the action of a flame. NOTE - Textile floor coverings embrace carpets with and without a pile. certain produces of the felt industry and other non-woven textile fabrics used as floor coverings . 2 REFERENCE the burner nozzle (45° inclined position) and the surface of the specimen must be 5 mm. With various flaming periods, it is established whether the specimen continues to bum, which part of the surface of the specimen is damaged or destroyed and the time required before a cotton thread. stretched transversely to the specimen 250 mm above the point of ignition, burns through or the time elapsing until the flame goes out before reaching the thread is noted. The following standard contains provision which, through reference in the text, constitutes provision of this standard. At the time of publication. the edition indicated was valid. All standards are subject to revision and parties to agreement based on this standard is encouraged to investigate the possibility of applying the most recent edition of the standard indicated below: 5 APPARATUS 5.1 Combustion Chamber 5.1.1 The combustion chamber as shown in Fig. I is made of stainless sheet. Uniformity of the air flow is ensured by means of the grid on which the stand rests. 5.1.2 During measurement, the air vent at the top of the chamber shall be connected up in such a way that an air velocity ofO.OS to 0.2 m1s prevails in the chamber from bottom to top. The air velocity shall be measured with an anemometer. For measuring points, see Fig. I. 5.1.3 The chamber is closed in front and on one side by glass doors which can be locked in position. The gas tube for the burner is led into the chamber from below. There is a further aperture in the front through which the lever for manipulating the burner passes. 5.2 Stand - The suspension device (see Fig. 2) is fitted to the stand, with its base-plate, in such a way that the specimen. which is suspended vertically there from. can be flamed in the manner described in 5.4 (see Fig. 3). The burner is movably fitted to the baseplate. enabling it to be inserted and withdrawn in a horizontal direction. 5.3 Specimen Holder 5.3.1 The specimen holder consists of an U-shaped double frame of stainless steel 3 mm thick, with an internal diameter of 80 mm x 325 mm (see Fig. 2). The width of the arms shall be about 12 mm. The specimen holder has a device by means of which it can be suspended in the stand as described in 5.2 . The upper part of the specimen holder also has a hook on each arm, 290 mm from the open lower edge, to which the cotton thread is attached. 5.3.2 A further component of the specimen holder is an asbestos cement sheet measuring 340 mm x 104 mm, IS No. 6359: 1971 TItle Method of conditioning of textiles 3 TERMINOLOGY For the purpose of this standard. the following definitions shall apply. 3.1 Burning Time - The burning time is deemed to be the time from removal of the igniting flame until a cotton thread, stretched transversely to the specimen 250 mm above the point of ignition, bums through or the time until the flame goes out before the thread has burnt through. 3.2 Smouldering Time - The smouldering time is deemed to be the time from extinction of the flame on the specimen until conclu sion of the after-glow. 3.3 Damaged Areas - A damaged area is deemed to be that part of the specimen which is damaged by the action of heat and/or by burning. It also includes those parts which reveal signs of damage, even if they are not burnt through to the base or backing. The damaged area is determined from its largest extent in terms of length and width. 4 PRINCIPLE The specimen is placed vertically in the combustion chamber on an asbestos cement sheet in accordance with 5.3 and exposed to a flame of specified size with the top of the burner 40 mm above the lower edge of the specimen. The distance between the front rim of IS 15764 : 2008 --360 --~ , ------- --~:-~~~- -= -il i I I ~r T I , I I A .L--...f-l l J r: 20 iununrumtmunrr ~ S6JctIorr -------100-----A- B I W r ~ I -- J- -.-"\-+-+-44 i l..kc"-L~ v x, Y. Z 6 emlIbow trJfItlWrfng the ai, WJIodty the r;rld~ for FIG. 1 COMBUSTION CHAMBER and 3 mm to 5 mm thick. Before being used for the first time, the asbestos cement sheet must be dried at 110°C in a drying cabinet for at least 12 h and have regained room temperature for the test. The two arms of the specimen holder are held together by sprung prongs or screws in such a way that, as far as possible the clamped specimen is not distorted. 5.4 Burner - The burner (see Fig. 4 and 5) is fitted so that it can stand up right and be inclined towards the specimen at 45° to the vertical . It must be possible to slide it forward and backward. The burner is to be lit in the vertical position. A graduated metal scale serves to adjust the height of the flame (see 5.10). There is a fine adjustment valve in front of the burner. The length of the flame is determined by the distance between the top edge of the burner and the visible luminous tip of the flame . 5.5 Gas - Commercial propane is preferred but other gases may also be used. 5.6 Stopwatch - Stopwatch with drag pointer enabling the time to be measured accurately to within 0.2. 2 5.7 Template - Template or punching instrument for cutting out specimens with edge lengths of 340 mm x l04mm. 5.8 Rule Rule with graduations, in mm. 5.9 Distance Gauge - Distance gauge 5 mm thick and about 50 mm wide for adjusting the distance between the front edge of the burner and the surface of the specimen. 5.10 Graduated Metal Scale - Graduated metal scale with 20 rnm marking lines for adjusting the height of the flame . 5.11 Cotton Thread - A mercerized cotton thread is used . 15 g weights are used on each side to stretch the cotton thread. 6 SAMPLING AND PREPARATION OF SPECIMENS 6.1 Ten specimens. measuring 340 mm x 104 mrn, are to be taken longitudinally from the sample. If the material has a nap (as with sculptured materials). the specimens are to be taken in the direction of the nap. IS 15764 : 2008 J ~ · Hook for -r I I I I I I . I I l- ~ ~ 0 ~ cotton thrBtKJ I i Cow? thffltJd C I I I I~~t ~ I L... I f---fX)!- 3 Other dimensiom as for left-hand illustration .... . ' 20 Thrs«J for cllllTlping .crew FIG. 2 S PECIM EN H OLD ER AND S USPENSION D EVICE 6.2 Prior to the test. the specimens are to be laid out for 72 h in a standard atmosphere of 27 ± 2°C and 65 ± 2 percent relative humidity in acco rdance with IS 6359 . 6.3 The specimens must not be taken out of the airconditio ned room until immedia tely before the test is conducted. If the air-condit ioned room and the point 3 where the burni ng test is carried ou t are separated. the specimens must be transported in a water vapour proof container wit hin 30 s of their removal from the conditioning atmosphere . 7 ME T HOD OF TEST 7.1 Immediately after removal from the air-conditioned IS 15764: 2008 SpBCimfIn holder SpBClmen Sul(Jension dwlc9 ,'. ' .AsbBstos cetmJl1t >' 1116et .' StlJ1Jd BunHll' · · FIG. 3 TEST ARRANGEMENT 20 ± I mm . The distance between the retracted burner and the specimen must be at least 50 mm. The burner must have been alight for at least I min before the flame is adjusted and if necessary. the flame must be 0 readjusted. The burner is then to be tilted through 45 and moved forward to with in 5 mm of the surface of the specimen. The burner must be so adju sted that the upper edge is in the centre of the specimen, 40 mm above the lower edge of the specimen (see Fig . 3). 7.4 In this position. the specimen is to be flamed for 15 s, after which the burner is withdrawn slowly and steadily. If the specimen ignites. the time elapsing, in accordance with 3.1 . before the cotton thread burns through and the weights fall. is to be measured . The longest mark burnt in a vertical direction on the damaged area is to be measured, also its greatest width. If the flames go out before reaching the cotton thread. 4 room or the water vapour-proof container. each specimen is to be laid out on the asbestos cement sheet and clamped in the specimen holder in such a way that it rests evenly and firmly on the base. If the material has a nap. then the specimen is to be clamped with the direction of the nap running from top to bottom. When the specimen holder has been secured to the stand. a cotton thread is suspended in accordance with 5.11 from the hooks described in 5.3 . 7.2 The distance betwe en the front edge of the burner and the surface of the specimen must be 5 mm. With the aid of a distance gauge. as described in 5.9. it is adjusted so that the gauge can move freely between the front edge of the burner and the specimen. 7.3 The burner is to be lit in the retracted upright position and the height of the flame adjusted to IS 15764 : 2008 Assembly without flnll adjustmentvalYe 1 1 Ga.nozzle 2 Bumertube 3 Outlet ItBbllizer SttJtJc rul» FittfJd during 1I-.nb1y Mixingchtml»r Burner tube (Serial No. 21 \1VV A $$ -0 _:I: r: AcceMtldon III1Ction GUicM lII1Ction --..-+----15------. l----------""'O----------l Outlet stablliZlilr (Serial No. 31 w 'VV \7\7il Surfaces Series 1 DIN 3141 F IG. 4 BCR:"E R 5 IS 15764 : 2008 EJ FIG. 5 POSSIBLE ARRANGEMENT OF B URNER AND FINE ADJl;STM ENT VALVE the time up to extinction of the flames is to be measured. 7.5 To start with, five specimens are flamed for 15 s.Tf three or more specimens catch fire, five further specimens shall be flamed for 5 s. 7,6 Although burning times of less than 2 s are to be recorded, they will not be considered when deciding whether to conduct further tests. 7.7 If the specimen continues to smoulder after the flame has gone out. the smouldering time in accordance with 3.2 is also to be measured. 7.8 Before the start of a fresh test, the specimen holder and the asbestos cement sheet are to be re-cooled to room temperature. Any residues (for example of backing layers) adhering to the base are to be removed. c) d) e) 1) 8 TEST REPORT The test report shall include the following: a) Description of the material of the specimen ; b) Flaming period; g) h) Burning times (in accordance with 3.1), arithmetical mean of 5 measurements, rounded to the nearest second, quoting individual values. for each flaming period . To obtain the mean value, only those burning times are to be used for which the eolian thread burned through; If the cotton thread had already burned through during the flaming period, this is to be specifically mentioned; Smouldering time. in seconds, arithmetical mean (as described under burning time) ; Damaged areas, quoting the greatest length and width of the area destroyed, rounded to 5 mm and, in addition, whether the whole surface of the specimen has burnt away above (and/or below) the point of ignition; A note is also to be made of whether only the pile or also the backing has burned away; and Observations on special behaviour, for example. uneven burning. Deviation from the standard date of test. 6 IS 15764 : 2008 ANNEXA (Foreword) COMMITTEE COMPOSITION Chemical Methods of Test Sectional Committee, TXD 05 Organization Representative! 5) Textiles Committee, Mumbai DR G. S. NADIGAR (Cha irm an) SHRI E. VISWAMDIIARAM (Altunate) Ahmedabad Textile Industry's Research Association, Ahmedabad Bapuji Inst itute of Engineering & Technology. Davangere DIRECTOR DR H. L. VIJAYK UMAR DR K. MLRUGESII BAPlI tAlternatei Central Institute for Research on Cotton Technology, Mumbai DR (Ms) C. R. RAtE DR R. H. BALASLIBRAMANYA (Aiternatet Central Pollution Control Board , Delhi DR M. Q. ANSARI SIlRI AJAY AGGARWAL (Alternate) Clariant India Ltd. Mumbai Directorate of Standardization (Production & Supplies) , NewDelhi DR V. G. NAYAK LT-COL (DR) R. SRIVASTAVA LT-CDR B. MANJl'NATIt (Alternate) Indian Instiute of Carpet Technology, Bhadohi PROF (DR) K. K. GOSWAMI SIlRIMATI BETTY DAs GUI'lA (Alternate) Indian Jute Industries' Research Assoc iation. Kolkata Jayashree Textiles, Rishra SIIRI A. K. BAN ERJEE SIlRI ABIlEY NAIR SIlRI PAWAS SIIARMA (Alternate) L.N. Chemical Industries. Mumbai Maniklal Verma Textile Institute, Bhilwara Man-Made Textile Research Association. Surat SIIRI KETAN L. GANDHI DR N. K. M.\TIl lJR DR SASUEEP R. NAIK SIlRI M.G. PATEL (Alternate) Ministry of Defence (DGQA), Kanpur LT-CoL P. P. NAlDlJ SIlRI RAMA Y ADW (Atternatei Ministry of Defence (R&D). Kanpur Ms ARCIIANA VYAS Ms PRIYANKA KATIYAR (Alternate) SIlRI R. A. LAI. SIIRI R.AYMOND RAMRAJKAR SIlRI D. I. DESAI (Alternate) Office of the Textile Commissioner, Mumbai Premier Colorscan Instruments Pvt Ltd, Thane Rajasthan Spinning and Weaving Mills Ltd. Noida SHRI K. D. JOSHI SHRI VIIAY YA D A V (Alternate) Reliance Industries Ltd, New Delhi SHR' P. K. BADASlI SIlRr SMiJ EEY ISRANI (Alternate) DR (Ms) BHARATI A. PATWARDHAN SHRI R. CHINRAJ SHRI RAJENDRA GAIKWAD (Alternates SNDT Women 's University, Mumbai Sudili Industries Ltd. Mumbai Sunil Industries Ltd. Mumbai SHRI VINOD G. LATII SHRI R.AMESH KHANN.A (Alternate) Texan Lab, Mumbai SIlR' ULLlI.AS NIMKAR SHRI RAHl'L BHAJEKAR (Alternates PROF S. K. LAG.A PROF S. S. CHISCHWAOE (Alternate ) Textiles & Engg Institute, Ichalkanmji 7 IS 15764 : 2008 Organization Representative!s) The Bombay Millowner's Association. Mumbai The Bombay Textile Research Association . Mumbai SHRI MAHESH SHARMA SHRI B. S. ACHARYA StiRI P. R. MISTRY iAltemate i SHRI D. BALASUBRAMANIAN SHRI K. S. TA RAPOREWALA StiRI D. L. SHAH (Alternate) The South India Textile Research Association. Coimbatore The Synthetics & Art Silk Mills' Research Association. Mumbai University Department of Chemical Technology. Mumbai PROF M. D. TEll PROF S. R. SHUKLA (Alternate) Veermata Jeejabai Technological Institute. Mumbai Wool Research Association. Thane PROF K.D. GAWAND SHRIMATI G. P. RANE SHRI V. C. PANSE (Al ternate ) In personal capacity (Z Siddhi ·Vinayak Cooperative Group Housing Society, Swatantrya Vur Savarkar Marg , Prabhadevi, Dadar; Mambai) SHRI M. D. DIX IT BIS Directorate General Scientist ' F' and Head (TXD) [Representing Director General (Ex-officio)] Member Secretary SHRI M. S. 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